Excavator.



No. 825,005. PATENTED JULY 3,V 1906. G. L. PAYNE. EXGAVATOR.

APPLICATION FILED DEO. 6, 1905.

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C. L. PAYNE. EXCAVATR.

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PATENT OFFICE. Y

CLAUDE L. PAYNE, OF SALEM, INDIANA.

EXCAVATOR.

Specification of Letters Patent.

Patented July 3, 1906.

Application filed December 6, 1905. Serial No. 290,656.

To @ZZ whom it may concern:

Be it known that I, CLAUDE L. PAYNE, a citizen of the United States, residing at Salem, in the county of Vashington and State of Indiana, have invented a new and useful Excavator, of which the following is a description.

This invention relates to excavators, and it is an improvement on the device of this class for which Letters Patent of the United States, No. 774,102, were issued to me on the 1st day of November, 1904, the objects of the present invention being to simplify and improve the general construction and to provide means whereby the frames carrying the digging and elevatinfr mechanisms may be automatically lowered orraised as the machine advances to a ground-engaging or nonengaging position, the latter position being occupied when the machine is being transported from one place to another.

With these and other ends in view, which will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts, which will be hereinafter fully described, and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations, and modifications within the scope of the invention may be made when desired.

In the drawings, Figure 1 is a side elevation of an excavator constructed in accordance with the principles of the invention. Fig. 2 is a top plan view. Figs. 3 and 4 are detail views enlarged of parts of the invention.

Corresponding parts in the several figures are indicated throughout by similar characters of reference.

The main frame of the excavator comprises side members 1 1 and the end members 2 2, which combine to form a rectangular frame which is supported on axles 3, having carrying wheels 4. Supported upon the ,frame near the front end is a crank-shaft 5,

pivoted upon a counter-shaft 8 which is suplported for rotation upon uprights or brackets 8 near the rear end of the frame.

The arms 6 6 are provided near their lower ends with bearings for a crank-shaft 9. Each which are oppositely disposed, and upon the cranks of the upper shaft are mounted arms 10, while arms 11 are mounted upon the cranks of the lower shaft. Frame-bars 12 prongs 13, and said tine-carrying bars are rigidly connected with the arms 1 1, engaging the cranks of the shaft 9, while said bars have slidable engagement with the arms 10, connected with the cranks of the upper crankshaft 5. The arms 10 have threaded apertures for the passage of screw-threaded rods 14, the lower ends of which are swiveled in the arms 11. The threads of the rods 14 are provided with notches l5 throughout the lengths thereof, said notches being adapted to be engaged by pawls 16, carried by levers 17, which are fulcrumedupon the arms 1() and actuated by springs 18, which serve to hold said pawls into operative engagement with the notched threads of the screws. The construction is such that when the lever 17 is rocked in one direction the screw-threaded rod will be turned to the right, and when the lever is rocked in the opposite direction the 19 represents a cross-bar which is detachably connected with brackets 20 upon the side members of the frame, and said crossbar carries a pair of blocks 21, having camgrooves 22, adapted to be engaged by the outer extremities of the levers 17 when the crank-shaft 5 is rotated so as to rock or oscillate said levers, with the effect of partially rotating and advancing the screw-threaded rods in an upward or downward direction, according to the direction in which the levers are rocked. Thisl direction may be reversed by simply reversing the position of the bar carrying the cam-grooved blocks or turning said bar end for end, when the cam-grooves will obviously operate to rock the levers in an opposite direction.

By this simple mechanism it will be seen that the screw-threaded rods may be automatically caused to move upwardly or downwardly through the arms 10, carrying with them the arms 11, tine-carrying bars 12, crank-shaft 9, side arms 6, and sidbe members 7, enabling this entire mechanism to be raised into position for transportation or to screw-threaded rod will be turned to the left..

of the crank-shafts 5 and 9 has two cranks are provided having earth-engaging tines or IOO IIO

be lowered for operative engagement with the ground.

The shaft 23, which forms a pivotal connecting means for the lower ends of the arms 5 6 and the frame members 7, serves, in conjunction with the shaft 8, to support an end, less carrier 24, equipped with buckets 25, said carrier being driven by means to be presently described. 26 designates a suitable motor 1o supported upon the frame of the machine, and the main driven shaft of said motor, 27, carries a sprocket-Wheel 28, Which is capable of being locked upon said shaft by means of a clutch member 29, operated by a shippingr 5 lever 30. The sprocket-Wheel 28 is connected by a chain 31 with a sprocket-wheel 32 up on the shaft 5, which latter is thus driven.

The motor-shaftv 27 carries a sprocketwheel 33, which is connected by a chain 34 zo with a sprocket-wheel 35 upon a shaft 36, having a pinion 37 meshing with a pinion 38 upon a counter-shaft 39, which latter has a sprocket-wheel 40, connected by a chain 41 with a sprocket-wheel 42 upon the elevatorshaft 8, which is thus driven. The shaft 36 carries a hub 42, having a spur-wheel 43 and a sprocket-wheel 44, suitably connected or l integral therewith, said hub being capable of being operatively locked upon the shaft by means of a clutch member 45. The sprocket wheel 44 is connected by a chain 46 with a sprocket-wheel 47 upon one of the hindwheels 4, to which motion may thus be transmitted for the purpose of driving or propelling the machine over the ground.

Upon a vertical shaft 48, which is suitably supported for rotation in the frame, is mounted a yoke 49, carrying a frame 50, the side members of which are provided with 4o bearin s for shafts 51 and 52, supporting vran en less carrier 53. The shaft 52 has a sprocket-wheel 54, connected by a chain 55 with a sprocket-wheel 56 upon a countershaft 57, journaled in the yoke 49 and having a bevel-pinion 58, meshing with a bevelpinion 59 upon the upper end of the vertical shaft 48. The latter carries at its lower end a bevel-pinion 60, meshing with a bevelpinion 61 upon a longitudinally-disposed shaft 62, having a Worm 63 meshing with a worm-gear 64 upon a counter-shaft 65, which latter is provided with a pinion 66, meshing with the spur-wheel43. The shaft 62 carries a bevel-pinion 67, meshing with a bevelpinion 68 upon the shaft 36.

wheel or pinion 38 are mounted slidably upon their respective shafts and are capable of being thrown simultaneously into or out of mesh with the worm 63, the bevel-pinion 67 and the pinion 37, respectively, by means of links 69, connecting the shiftable members with bell-cranks 70, which in turn are connected by means of a link-rod 71, operable by means of a lever 72. It will be readily seen that `parts may be automatically restored to the The Worm-f gear 64, the bevel-pinion 68, and the spur:

when the shiftable members 64', 68, and 38 are out of mesh with the mating members and the clutch 45 is in engagement with the hub 42 motion will be transmitted from the drivenshaft of the motor direct to the hind 7o wheels of the frame, which may thus be driven as a traction-engine. When, on the other hand, the clutch 45 is disengaged from the hub 42 and the shiftable members 64, 68, and 38 are in mesh with the matin members, 75 the endless carriers 24 and 53 wil be driven and at the same time a forward motion at a slow rate of speed will be imparted to the truck through the medium of the worm-gearing 64 62 and the pinion 66, the latter mesh- 8o ing with the spur-wheel 43 of the hub 42, from which motion is transmitted to the hind wheels. n

When the machine is iirst started in operation, it will start with the arms 6 and the sidel 8 5 members 7 of the elevator-frame in a raised position. The reciprocatory toothed bars 12 will operate to loosen the dirt, which is conveyed by the elevator 24` to the endless car-V rier 53, whereby it may be discharged at 9o either side. As the machine slowly advances the side members or arms 6 with the elevatorframe and the toothed earth-engaging bars will be slowly fed or movedV in a downward direction by the mechanism herein described until the proper depth has been reached. The cross bar 19, carrying the camgrooved blocks 21, may then be detached, thus effecting a cessation of the downward movement of the arms or members 6 and related parts, said arms being preferably secured in the desired position, as by means of clamping devices 75. When the operation has been brought to a finish, the arms 6 and related IOO normal or elevated position, as'will be readily understood.

Having thus described the invention, what is claimed is 1. IIn an excavator, ground-breaking devices comprising frames having a downward and rearward angle, means for imparting reciprocatory movement to said frames, groundengaging tines carried upon the frames, and means for elevating said frames. above the ground.

2. In an excavator, ground-breaking devices consisting of reciprocatory frames hav- IIO ing ground-engaging tines, supporting means for said tines, an elevator connected with the 12o supporting means, and means for eecting vertical adjustment of said supporting means.

3. In an excavator, a frame mounted upon wheels for transportation, a crank-shaft supported for rotation upon the frame, slotted 12 5 arms engaging said crank-shaft, a crankshaft supported for rotation in the slotted arms, arms pivoted upon the cranks of the latter crank-shaft, toothed bars connected rigidly with said arms, arms connected with 13o the cranks of the upper crank-shaft and having sliding engagement with the toothed bars, screw-threaded rods extending through screwthreaded apertures in said arms and having swivel connection with the arms connected with the cranks upon the lower crank-shaft, anl means for operating the screw-threaded ro s.

4. In an excavator, a crank-shaft, arms pivoted upon the cranks of said shaft, earthengaging members having slidable connection with said arms, arms connected rigidly with the earth-engaging members, screwthreaded rods having swivel connection with the latter arms and extending through threaded apertures in the arms connected with the crank-shaft, and means for rotating said rods to feed the earth-engaging members upward or downward according to the direction of rotation.

5. A shaft having cranks, arms connected with said cranks, screw-threaded rods extending through threaded apertures in said arms the threads of said rods being provided with notches, earth-engaging members connected operatively with the screw-threaded rods, and levers pivoted upon the arms and having spring-actuated pawls engaging the notched threads upon the rods.

6. A shaft having cranks, arms connected with said cranks, screw-threaded rods extending through threaded apertures in said arms the threads of said rods being provided with notches, earth-engaging members connected operatively with the screw-threaded rods, le-

vers pivoted upon the arms and having spring-actuated pawls engaging the notched threads upon the rods, and camrooved blocks supported in the path of said evers.

7. In an excavator, a driven crank-shaft, arms engaging the cranks upon said shaft, screwthreaded rods extending through threaded apertures in said cranks, earth-engaging reciproca-tory devices operativel connected with said screw-threaded rods, evers having spring actuated pawls engaging notches in the threads of the rods, and camgrooved blocks supported reversibly and detachably in the paths of the free extremities of said levers.

8. An excavator comprising a wheelmounted frame, a motor mounted on the frame, excavating devices mounted by the motor at the forward portion of the frame said devices having a downward and rearward inclination, an elevator connected with the excavating devices said elevator having an upward and rearward inclination and operated from the motor, and means for automatically moving the excavating devices in an upward or downward direction as the machine advances.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

CLAUDE L. PAYNE.

Witnesses CHAs. A. ROBERTSON, CURTIS F. CALLAwAY. 

